package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.AddressBook;
import com.sky.entity.OrderDetail;
import com.sky.entity.Orders;
import com.sky.entity.ShoppingCart;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;

import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    // 用户下单
    @Override
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //1.排除业务异常
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            //地址簿数据不存在
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName()
                + addressBook.getDetail());

        //购物车为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart cart = new ShoppingCart();
        cart.setUserId(userId);
        List<ShoppingCart> Shoppinglist = shoppingCartMapper.list(cart);

        if (Shoppinglist == null || Shoppinglist.size() == 0) {
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //2.向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);//待支付
        orders.setStatus(Orders.PENDING_PAYMENT);//待接单
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());//收货人
        orders.setUserId(userId);
        orderMapper.insert(orders);
        //3.向订单明细表插入n条数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart shopcart : Shoppinglist) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(shopcart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //4.清空当前用户的购物车数据
        shoppingCartMapper.deleteByUserId(userId);

        //5.返回OrderSubmitVO
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();


        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
//        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);
//
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
//
//        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//        vo.setPackageStr(jsonObject.getString("package"));
        log.info("跳过支付");
        paySuccess(ordersPaymentDTO.getOrderNumber());
        return new OrderPaymentVO();
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端推送消息
        Map map = new HashMap();
        map.put("type", 1);// 1表示来单提醒，2表示客户催单
        map.put("orderId", ordersDB.getId());//订单id
        map.put("content", "订单号：" + outTradeNo);

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);


    }

    //历史订单查询
    @Override
    public PageResult historyOrders(Integer page, Integer pageSize, Integer status) {
        //设置分页
        PageHelper.startPage(page, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        //分页条件查询
        Page<Orders> pages = orderMapper.pageQuery(ordersPageQueryDTO);


        List<OrderVO> list = new ArrayList<>();
        if (pages != null && !pages.isEmpty()) {
            for (Orders order : pages) {
                Long id = order.getId();//订单id

                //查询订单详情
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order, orderVO);
                orderVO.setOrderDetailList(orderDetailList);

                list.add(orderVO);


            }

        }


        return new PageResult(pages.getTotal(), list);
    }

    //查询订单详情
    @Override
    public OrderVO orderDetail(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);

        //查询订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);

        orderVO.setOrderDetailList(orderDetailList);

        // 根据addressBookId获取地址信息
        if (orders.getAddressBookId() != null) {
            AddressBook addressBook = addressBookMapper.getById(orders.getAddressBookId());
            if (addressBook != null) {
                // 构建完整地址
                StringBuilder fullAddress = new StringBuilder();
                if (addressBook.getProvinceName() != null) {
                    fullAddress.append(addressBook.getProvinceName());
                }
                if (addressBook.getCityName() != null) {
                    fullAddress.append(addressBook.getCityName());
                }
                if (addressBook.getDistrictName() != null) {
                    fullAddress.append(addressBook.getDistrictName());
                }
                if (addressBook.getDetail() != null) {
                    fullAddress.append(addressBook.getDetail());
                }
                orderVO.setAddress(fullAddress.toString());
            }
        }


        return orderVO;
    }

    //订单取消
    @Override
    public void cancel(Long id) throws Exception {
        //查询订单
        Orders ordersDB = orderMapper.getById(id);

        //判断订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //判断订单是否可取消
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(id);
        //订单处于待接单状态，可以取消
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        //修改订单状态
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    //再来一单
    @Override
    public void repetition(Long id) {
        //获取用户id
        Long userId = BaseContext.getCurrentId();
        //获取订单详细信息
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        List<ShoppingCart> collect = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            //把订单详情转为购物车数据
            BeanUtils.copyProperties(x, shoppingCart);
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());

        //添加到购物车
        shoppingCartMapper.insertBatch(collect);
    }


    //订单分页查询
    @Override
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        //设置分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> pages = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> orderVOlist = new ArrayList<>();
        //获取订单菜品信息
        if (pages != null && !pages.isEmpty()) {
            for (Orders order : pages) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order, orderVO);
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
                //组合订单菜品信息
                List<String> orderDishList = orderDetailList.stream().map(x -> {
                    String orderDishes = x.getName() + "*" + x.getNumber() + ";";
                    return orderDishes;
                }).collect(Collectors.toList());
                String dish = String.join("", orderDishList);
                orderVO.setOrderDishes(dish);
                // 添加地址信息
                if (order.getAddressBookId() != null) {
                    AddressBook addressBook = addressBookMapper.getById(order.getAddressBookId());
                    if (addressBook != null) {
                        // 构建完整地址
                        StringBuilder fullAddress = new StringBuilder();
                        if (addressBook.getProvinceName() != null) {
                            fullAddress.append(addressBook.getProvinceName());
                        }
                        if (addressBook.getCityName() != null) {
                            fullAddress.append(addressBook.getCityName());
                        }
                        if (addressBook.getDistrictName() != null) {
                            fullAddress.append(addressBook.getDistrictName());
                        }
                        if (addressBook.getDetail() != null) {
                            fullAddress.append(addressBook.getDetail());
                        }
                        orderVO.setAddress(fullAddress.toString());
                    }
                }
                orderVOlist.add(orderVO);
            }
        }
        return new PageResult(pages.getTotal(), orderVOlist);
    }


    //订单统计
    @Override
    public OrderStatisticsVO statistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);//待接单
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);//待派送
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);//派送中

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);


        return orderStatisticsVO;
    }

    //接单
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)//已接单
                .build();
        orderMapper.update(orders);
    }

    //拒单
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        //获取当前订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        //判断当前订单是否为待接单状态
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //订单是否付钱
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus.equals(Orders.PAID)) {
            //如果已经支付，则退款
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);

        }
        Orders orders = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)//已取消
                .rejectionReason(ordersRejectionDTO.getRejectionReason())//取消原因
                .cancelTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);


    }

    //商家取消订单
    @Override
    public void delete(OrdersCancelDTO ordersCancelDTO) throws Exception {
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //判断订单是否已经支付
        Integer status = ordersDB.getStatus();
        if (status == 1) {
            // 已经支付，则退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        Orders orders = Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)//已取消
                .cancelReason(ordersCancelDTO.getCancelReason())//取消原因
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    //派送订单
    @Override
    public void delivery(Long id) {
        Orders order = orderMapper.getById(id);
        //判断订单是否在待派送
        if (order == null || !order.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)//派送中
                .deliveryTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);

    }

    //完成订单
    @Override
    public void complete(Long id) {
        Orders order = orderMapper.getById(id);
        //判断订单是否在派送中
        if (order == null || !order.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)//派送中
                .deliveryTime(LocalDateTime.now())
                .build();
                orderMapper.update(orders);
    }

    //催单
    @Override
    public void reminder(Long id) {
        Orders order = orderMapper.getById(id);
        //判断订单是否存在
        if (order == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map = new HashMap<>();
        map.put("type", 2);//催单
        map.put("orderId",id.toString());
        map.put("content", "订单号:" + order.getNumber());

        //通过websocket发送消息给客户端
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }


    //检查客户的收货地址是否超出配送范围
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

}
